AI-generated Key Takeaways
- 
          EnvironmentType is an enum that defines valid environments for displaying ads. 
- 
          The valid environments are BROWSER for web browsers and VIDEO_PLAYER for video players. 
                  Service
               
               
            
                  Dependencies
               
               
                  ProposalLineItem
                  
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                  EnvironmentType
               Enum for the valid environments in which ads can be shown.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202411
| Enumeration | Description | 
|---|---|
| BROWSER | A regular web browser. | 
| VIDEO_PLAYER | Video players. |